Family Description: Small trees, shrubs, or herbs, with poisonous latex. Leaves simple, exstipulate, with glands in or above the axils. Flowers solitary or in cymes, hermaphrodite, actinomorphic, 5-merous. Corolla with oblique lobes, contorted in bud. Stamens 5; anthers introrse, closely surrounding the stigma. Ovary superior; carpels 2, usually free, united by a single style above. Fruit of two fusiform follicles, usually opening by the ventral suture; rarely only one follicle developing.